Is there a command for device restart by software?

I use gpio-simulate-I2C interface  to comnunicate with HUSKYLENS by the protocol document.

It's OK to get all the information (x,y,w,h) of blocks at beginning.

but a few minutes later,  i get the HEADER 0xFFFF instead of 0xAA55.

Otherwise, I still can send command to control the device(eq. change algorithm by COMMAND_REQUEST_ALGORITHM)

Only when I restart the device or I change the interface setting(auto-detection/ I2C), the communication works normally.

So, I want to know if there any method to restart the device by software command?

Or a software command to switch the interface setting?

Then I can initialize the device if the device works abnormally.

Thanks a lot !